Biology
The character of tongue rolling was observed in the family of Mr. and Mrs. Sharma who have two children, one son Rajesh and one daughter Radhika. Rajesh is a tongue roller whereas Radhika is a non-roller. Both the parents have the same genotype and phenotype. Which of the following options is correct for both Mr. and Mrs. Sharma ?
- Homozygous tongue rollers
- Homozygous non-rollers
- Heterozygous tongue rollers
- Heterozygous non-rollers
Genetics
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Answer
Heterozygous tongue rollers
Reason —
| Heterozygous tongue roller father (Rr) | ||
|---|---|---|
| R | r | |
| Heterozygous tongue roller mother (R) | RR Homozygous tongue roller | Rr Heterozygous tongue roller |
| Heterozygous tongue roller mother (r) | Rr Heterozygous tongue roller | rr Non-tongue roller |
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